I have Windows Vista Home Premium installed on my Acer Aspire 5102WLMi since about May/2007. I've never formatted the HDD, but I have no problems with it, so formatting it is out of question.
After so much time with the same installation and many updates, Windows now is using about 60% of my C: partition -- as per image attached.
Opening the C:\WINDOWS directory, C:\WINDOWS\WINSXS\ is using about 50% of those 60%. That means 30% of my C: partition is used by this WINSXS directory. The top 3 directories under C:\WINDOWS use about 50% of all my C: partition.
As you can see, Windows only is leaving me only 40% of the primary partition to be used. It wasn't like that until about 1 year ago. I had plenty space to use.
I have once ran a command that deleted all the backups made by Windows Update. That was meant to make all updates "glued" to Vista, which means the updates can't be undone. I have also decreased the shadow copy space (even though there isn't shadow copy available in Windows Vista Home Premium).
Is there any other way I can make Windows Vista use less space, other than removing my programs? I have already removed a lot of software and now I have only the really necessary ones.